BMW 5 Series Touring (2018) is 163 mm (6.42 inch) longer, 224 mm (8.82 inch) higher and has 150 liters (5.30 ft3) bigger cargo space than BMW 8 Series (G15) (2019).
BMW 8 Series (G15) (2019) is 7 mm (0.28 inch) wider and 77 kg (170 lbs) lighter than BMW 5 Series Touring (2018).